Yee-Haw!! The Pony Rider Boys are on the move again! This time the boys are in the Ozark Mountains in Missouri. With Joe Hawk, or Eagle-eye, guiding them, Professor Zepplin and the Pony Rider Boys are sure to find many adventures in this action-packed, fourth book of this series by Frank Gee Patchin. (Summary by Ann Boulais) <br /><br />Previous book in the series: <a href="http://librivox.org/the-pony-rider-boys-in-montana-by-frank-gee-patchin/">The Pony Rider Boys in Montana</a><br />Next book in the series: <a href="http://librivox.org/the-pony-rider-boys-in-the-alkali-by-frank-gee-patchin/">The Pony Rider Boys in the Alkali</a>
